Cast

Nat Faxon

Captain Underpants / Mr. Krupp (voice)

Jay Gragnani

Harold (voice)

Ramone Hamilton

George (voice)

Sean Astin

Narrator / Mr Gigglenose (voice)

Dayci Brookshire

Jessica / Dressy (voice)

Clancy Brown

Mr. Ree (voice)

Jorge Diaz

Melvin / Stanley Peet / Melvin's Dad (voice)

Peter Hastings

Comic Narrator (voice)

Evan Kishiyama

Steve "Gooch" Yamaguchi (voice)

David Koechner

Mr. Meaner (voice)

Crew

Dav Pilkey

Novel (Writing)

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Mark Banker

Writer (Writing)

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Seung Woo Cha

Director (Directing)

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Kevin Peaty

Director (Directing)

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Matt Smith

Writer (Writing)